Which is cheaper, the Bremont Supermarine 300M or the Sheffield 1A 38?

At MSRP the Sheffield 1A 38 is the cheaper of the two at $238, against $3,550 for the Bremont Supermarine 300M — a $3,312 gap before any retailer discounting.

Which is bigger, the Bremont Supermarine 300M or the Sheffield 1A 38?

The Bremont Supermarine 300M wears larger at 40mm versus 38mm for the Sheffield 1A 38 — a 2mm difference across the dial.

Which has better water resistance, the Bremont Supermarine 300M or the Sheffield 1A 38?

The Bremont Supermarine 300M is rated to 300m versus 200m for the Sheffield 1A 38.

What movement does the Bremont Supermarine 300M run compared to the Sheffield 1A 38?

Both watches run automatic movements — the Bremont Supermarine 300M uses the BE-92AE and the Sheffield 1A 38 uses the Seiko NH35.

Side by side

Bremont Supermarine 300MvsSheffield 1A 38

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Bremont Supermarine 300M

sm40-nd-ss-gn-b

MSRP $3,550

Sheffield 1A 38

1a-38-blue

MSRP $238

At a glance

9 of 29 specs differ

Diameter

Supermarine 300M40mm

1A 3838mm

Power Reserve

Supermarine 300M40h

1A 38—

Water Resistance

Supermarine 300M300m

1A 38200m

MSRP

Supermarine 300M$3,550

1A 38$238

Full specifications

Case

5 specs

Diameter

40mm

38mm

Thickness

12mm

12.8mm

Lug-to-Lug

—

46mm

Material

904L Stainless Steel

Stainless Steel

Water Resistance

300m

200m

Crystal & Dial

1 specs

Dial Color

Green

Blue

Movement

2 specs

Caliber

BE-92AE

Seiko NH35

Power Reserve

40h

—

Pricing

1 specs

MSRP

$3,550

$238

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Bremont Supermarine 300MvsSheffield 1A 38

At a glance

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